Common hepatic duct

Last revised by Dr Daniel J Bell on 25 Oct 2019

The common hepatic duct (CHD) is formed by the junction of the right and left hepatic ducts. It joins the cystic duct to form the common bile duct (CBD). It is approximately 4 cm long and 4 mm in diameter. 

Together with the cystic duct (laterally) and cystic artery (superiorly), they form Calot's triangle.

Terminology

On ultrasound imaging, it is not always possible to confidently see where the cystic duct enters the common hepatic duct to form the common bile duct. Therefore it is common practice to use the term common duct (CD) as a term conflating the common hepatic and common bile ducts. 

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Cases and figures

  • Figure 1
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  • Figure 2: common duct anatomy and variation
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  • Case 1: normal CT intravenous cholangiogram
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